CN113746267A - Cooling and ventilating device of generator - Google Patents
Cooling and ventilating device of generator Download PDFInfo
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- CN113746267A CN113746267A CN202110830029.2A CN202110830029A CN113746267A CN 113746267 A CN113746267 A CN 113746267A CN 202110830029 A CN202110830029 A CN 202110830029A CN 113746267 A CN113746267 A CN 113746267A
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- 238000001816 cooling Methods 0.000 title claims abstract description 23
- 239000004568 cement Substances 0.000 claims abstract description 6
- 238000009423 ventilation Methods 0.000 claims description 24
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000009434 installation Methods 0.000 claims description 14
- 230000009193 crawling Effects 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 9
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 238000003466 welding Methods 0.000 description 9
- 241000209020 Cornus Species 0.000 description 6
- 230000005484 gravity Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 1
- 241000282326 Felis catus Species 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000009666 routine test Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
- H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
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Abstract
The invention discloses a generator cooling and ventilating device which comprises an air supply system and a support frame, wherein the air supply system is respectively communicated with a main air pipe and a horizontal air pipe, a main air pipe cantilever is arranged on the support frame, and the main air pipe is arranged on the main air pipe cantilever. The main air pipe cantilever is used for supporting the main air pipe, the main air pipe is used for an upper air inlet mode of a tested motor, and the horizontal air pipe is used for a horizontal air inlet mode of the tested motor. The invention has the beneficial effects that: the support frame and the air supply system are respectively and independently installed on the ground of a factory building in a ground riveting bolt and cement grouting mode, and the influence of the vibration of the air supply system on a main air pipe and a cantilever thereof is isolated; a horizontal air outlet is added on the basis of only one upper air outlet of the original device so as to meet the test requirements of the generators with two different air inlet modes; the main air pipe and the cantilever thereof are added with an electromagnetic locking function and a balance block to ensure the stability; the main air pipe is provided with a porous flow-adjusting grid, and the air outlet end is inclined downwards by 135 degrees +/-15 degrees so as to reduce the weight and the wind resistance.
Description
Technical Field
The invention relates to a ventilation device for a generator test, in particular to a cooling and ventilation device for a generator.
Background
Forced draft generator all need carry out routine test and type test according to the requirement of experimental outline and technical condition, and the experiment needs to be carried out under the air volume condition of regulation, and former generator cooling ventilation device only has an air outlet, and the manufacturing and designing of tuber pipe does not conform to the requirement of national standard GB1236, and the main tuber pipe cantilever does not have locking function, and the vibration of main tuber pipe is very big, and the data fluctuation is big during the measurement, and the test result is unreliable, inaccurate, and the regulation of the amount of wind is very difficult.
Disclosure of Invention
The invention aims to: the utility model provides a generator cooling ventilation device, generator cooling ventilation device has reformed transform to solve system stability, make measuring result accurate reliable, and better satisfy the requirement of national standard GB1236 industrial ventilation machine standard wind channel test to amount of wind static pressure test.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a generator cooling ventilation unit, includes air feed system and support frame, and the air feed system communicates with main tuber pipe, horizontal tuber pipe respectively, is equipped with the main tuber pipe cantilever on the support frame, and the main tuber pipe is established on the main tuber pipe cantilever. The main air pipe cantilever is used for supporting the main air pipe, the main air pipe is used for an upper air inlet mode of a tested motor, and the horizontal air pipe is used for a horizontal air inlet mode of the tested motor.
Furthermore, the air supply system and the support frame are respectively and independently installed on the ground of the factory building in a ground riveting bolt and cement grouting mode. And the influence of the vibration of the air supply system on the main air pipe and the cantilever thereof is isolated.
Furthermore, the air supply system comprises an upper air outlet and a horizontal air outlet, the upper air outlet is communicated with the main air pipe through an upper air cylinder, the horizontal air outlet is communicated with the horizontal air pipe, and ventilation valves are arranged between the upper air outlet and the upper air cylinder and between the horizontal air outlet and the horizontal air pipe. And one unused air outlet is shielded and closed according to the air inlet mode.
Furthermore, the ventilation valve is a wind shield, and the flow section is shielded by the wind shield, so that through communication or closing is realized.
Furthermore, the air supply system comprises an impeller cover, an upper air outlet and a horizontal air outlet are formed in the impeller cover, a fan impeller is arranged in the impeller cover and connected with a driving motor, and the driving motor is connected with a frequency converter. The driving electrode drives the fan impeller to rotate, and the fan impeller generates wind pressure to supply wind quantity.
Furthermore, the upper air cylinder of the air supply system comprises three sections, wherein the middle section is a soft air pipe, and the other two sections are steel air pipes.
Furthermore, the support frame comprises a support frame, a ladder stand is arranged on the side portion of the support frame, an installation panel is arranged on the upper portion of the support frame, and the installation panel supports the main air duct cantilever. The supporting frame is a main body supporting frame, the ladder stand is convenient for personnel to operate, and the mounting panel is used for supporting and mounting a structural component above the ladder stand.
Furthermore, braced frame include the frame, the braced frame of frame connection formation rectangle is connected with the strengthening rib that is located the side around between the frame, is connected with the cat ladder that is located the side about between the frame. And a stable and reliable supporting structure is formed by welding steel structures.
Furthermore, the support frame is provided with a rotating mechanism, and the main air pipe cantilever is arranged on the rotating mechanism. The rotating mechanism is a device for realizing the rotating transition between the fixed support frame and the rotating main air pipe cantilever.
Furthermore, rotary mechanism include the mounting panel, go up the mounting panel and be connected with main air duct cantilever, go up the mounting panel and be connected with rotating assembly, rotating assembly and lower mounting panel are connected, lower mounting panel is connected with the support frame. The upper mounting plate and the lower mounting plate are used for connecting and mounting the support frame and the main air pipe cantilever, and the rotating assembly comprises two parts capable of rotating relatively.
Furthermore, the lower mounting plate is provided with a driving assembly, and the driving assembly is connected with the rotating assembly through a gear. The driving assembly provides rotary power to realize the movement between the two parts of the rotating assembly.
Furthermore, last mounting panel with be equipped with locking Assembly down between the mounting panel, locking Assembly is used for the fixed between the rotating assembly two parts, guarantees stable in structure.
Furthermore, the main air pipe comprises an elbow section, the elbow section is communicated with the air supply system, the elbow section is communicated with the horizontal section, and the horizontal section is communicated with the downward inclined section. The elbow section is used for transition between the vertical pipeline and the horizontal pipeline, the horizontal section realizes crossing of the pipeline, and the declined section is used for downward detection of the pipeline.
Furthermore, the included angle between the horizontal section and the lower inclined section is 135 degrees +/-15 degrees.
Furthermore, the main air duct cantilever include the cantilever mounting bracket, the support frame supports the cantilever mounting bracket, the cantilever mounting bracket is connected with the main cantilever, the one end of main cantilever is equipped with the balancing piece, the other end and the main air duct of main cantilever are connected. The cantilever mounting rack is used for connecting the main cantilever and the rotating mechanism, the main cantilever is used for realizing the connection and fixation of the main air pipe, and the balance block is used for balancing the gravity of the other end of the main cantilever and the main air pipe.
Further, the main cantilever on be equipped with the support column, be equipped with between the both ends of support column and main cantilever and draw large-leaved dogwood to one side, draw large-leaved dogwood to one side and be used for strengthening the main cantilever, avoid the main cantilever deformation of encorbelmenting.
Furthermore, main cantilever pass through the fixed band and be connected with the main tuber pipe, the fixed band includes ligature area and damping area two kinds, realizes the fixed of main tuber pipe on main cantilever.
The invention realizes the following functions:
the device integrally adopts a fixed installation mode, is a double-air-outlet cooling and ventilating device, and is used for meeting the test requirements of two different air inlet modes of air inlet and horizontal air inlet on a generator respectively, the rotary arm of the main air pipe can rotate by 0-180 degrees, and the main air pipe and the cantilever thereof are parallel to a factory building wall body when not used.
The invention has the beneficial effects that:
1. the device adopts a ground riveting bolt and cement grouting mode to independently install the ventilation system support frame and the air supply system on the plant ground respectively, and the influence of the vibration of the air supply system on the main air pipe and the cantilever thereof is isolated.
2. This device increases a horizontal air outlet on the basis of the air outlet only on one of former device to satisfy the experimental needs of two kinds of different air inlet mode generators of last air inlet mode and horizontal air inlet mode.
3. The main air pipe and the cantilever thereof are added with an electromagnetic locking function and a balance block so as to ensure the stability of the main air pipe and the cantilever thereof.
4. The main air pipe is provided with a porous flow-adjusting grid, and the air outlet end is inclined downwards by 135 degrees +/-15 degrees so as to reduce the weight and the wind resistance.
The main scheme and the further selection schemes can be freely combined to form a plurality of schemes which are all adopted and claimed by the invention; in the present invention, the selection (each non-conflicting selection) and the other selections can be freely combined. The skilled person in the art can understand that there are many combinations, which are all the technical solutions to be protected by the present invention, according to the prior art and the common general knowledge after understanding the scheme of the present invention, and the technical solutions are not exhaustive herein.
Drawings
Fig. 1 is a front view of the structure of the present invention.
Figure 2 is a side view of the structure of the present invention.
Fig. 3 is a front view of the support frame structure of the present invention.
Figure 4 is a side view of the support frame structure of the present invention.
Fig. 5 is a schematic structural view of the rotating mechanism of the present invention.
Fig. 6 is a schematic view of the cantilever structure of the main air duct of the present invention.
Fig. 7 is a schematic view of the structure of the main air duct of the present invention.
In the figure: 1-an air supply system, 2-a support frame, 3-a rotating mechanism, 4-a main air pipe, 5-a main air pipe cantilever, 6-a horizontal air pipe and 7-a tested motor; 11-an upper air outlet, 12-a horizontal air outlet, 13-an upper air duct, 15-an impeller cover, 16-a driving motor and 17-a wind shield; 21-frame, 22-reinforcing rib, 23-ladder stand and 24-installation panel; 31-upper mounting plate, 32-lower mounting plate, 33-rotating assembly, 34-driving assembly, 35-locking assembly; 41-elbow section, 42-horizontal section, 43-downward inclined section; 51-cantilever mounting rack, 52-main cantilever, 53-balance block, 54-diagonal tension large-leaved dogwood, 55-supporting column and 56-fixing belt
Detailed Description
The invention will be further described with reference to specific embodiments and the accompanying drawings.
Referring to fig. 1 to 7, a generator cooling and ventilating device includes an air supply system 1, a support frame 2, a rotating mechanism 3, a main air duct 4, a main air duct cantilever 5, and a horizontal air duct 6.
This device adopts ground to rivet bolt and cement grout mode and install air supply system 1, support frame 2 respectively independently on the factory building ground, keeps apart the influence of air supply system's vibration to main tuber pipe and cantilever thereof. The rotary locking mechanism is arranged on the mounting panel of the support frame, the cantilever of the main air pipe is arranged on the upper mounting plate of the rotary locking mechanism, and the air inlet end of the main air pipe is arranged on the upper mounting plate of the rotary locking mechanism.
The straight line part of main tuber pipe is installed in main tuber pipe cantilever below, adds the area of shaking with the ligature area and fixes, and the air outlet end downward sloping of main tuber pipe is about 135 + -15 to reduce windage and main tuber pipe total weight. The air quantity adjusting mode is changed from a mode of shielding the air inlet into a mode of controlling and adjusting the air quantity by the frequency converter.
The main air pipe and the cantilever of the main air pipe can rotate in two directions, when the air pipe is not used, the main air pipe and the cantilever of the main air pipe are parallel to a wall body of a factory building, the influence on the lifting of a traveling motor is avoided (shown in figure 1), and when the air pipe is used, the main air pipe and the cantilever of the main air pipe rotate to be perpendicular to the wall body of the factory building (shown in figure 2).
The air supply system 1 is formed by reforming original equipment, reforming content comprises an increased installation bottom plate and a horizontal air outlet, and an unused air outlet is shielded by using an air baffle (comprising a process cover plate and a sealing gasket) for installation. The air supply system 1 comprises an impeller cover 15, an upper air outlet 11, a horizontal air outlet 12 and an upper air duct 13.
A fan impeller is arranged in the impeller cover 15 and is connected with a driving motor 16, and the driving motor 16 is connected with a frequency converter. The impeller, the impeller cover, the driving motor, the driving shaft and other parts are installed on an installation bottom plate to form a whole, and the air supply system and the ground are fixedly installed in a manner of using ground riveting bolts and adding cement grouting. The motor is driven by a frequency converter instead of a power frequency power supply, so that the air quantity can be accurately and reliably controlled and adjusted.
The upper air outlet 11 and the horizontal air outlet 12 are arranged on the impeller cover 15, the upper air outlet 11 is communicated with the main air pipe 4 through an upper air duct 13, and the horizontal air outlet 12 is communicated with the horizontal air pipe 6. The inner diameters of the upper air inlet cylinder at the motor end and the horizontal air inlet cylinder at the motor end, the upper air outlet air cylinder, the upper air inlet cylinder at the motor end, the horizontal air inlet cylinder at the motor end and the like are consistent with the inner diameter of the main air pipe.
Wind shields 17 are arranged between the upper air outlet 11 and the upper air cylinder 13 and between the horizontal air outlet 12 and the horizontal air pipe 6 to be used as ventilation valves. The upper air duct 13 comprises three sections, wherein the middle section is a soft air duct, the other two sections are steel air ducts, and the inner diameter of each air duct is consistent with that of the main air duct.
The support frame 2 comprises a support frame, the support frame comprises frames 21, the frames 21 are connected in a welding mode to form a rectangular support frame, reinforcing ribs 22 located on the front side and the rear side are connected between the frames 21 in a welding mode, a ladder 23 located on the left side and the right side is connected between the frames 21 in a welding mode, an installation panel 24 is arranged on the upper portion of the support frame in a welding mode, and the installation panel 24 is connected with a rotating mechanism.
The machining size of the installation panel is matched with the machining sizes of the lower installation plate and the upper air inlet pipe of the rotary locking mechanism, and except for the installation panel, the support frame is formed by assembling and welding rectangular steel, steel pipes, channel steel and the like. The rotary locking mechanism is arranged on the mounting panel, and the steel air inlet cylinder is arranged below the mounting panel. The ladder stand is convenient for maintenance personnel to maintain the device.
The rotary mechanism 3 includes an upper mounting plate 31, a lower mounting plate 32, a rotary assembly 33, a drive assembly 34, and a locking assembly 35. Go up mounting panel 31 and main air duct cantilever 5 and be connected, go up mounting panel 31 and be connected with rotating assembly 33, rotating assembly 33 is connected with lower mounting panel 32, and lower mounting panel 32 is connected with support frame 2.
The lower mounting plate 32 is provided with a driving assembly 34, the driving assembly 34 is connected with the rotating assembly 33, and the rotating movement between the two parts of the rotating assembly is realized through the driving assembly. An electromagnetic locking assembly 35 is arranged between the upper mounting plate 31 and the lower mounting plate 32, and the two parts of the rotating assembly are rotationally locked through the locking assembly. The driving system comprises a driving motor, a gear, a friction wheel, a bearing seat, a rotating main shaft and other main components.
The main air duct 4 comprises an elbow section 41, the elbow section 41 is communicated with the air supply system 1, the elbow section 41 is communicated with a horizontal section 42, and the horizontal section 42 is communicated with a lower inclined section 43. The angle between the horizontal section 42 and the lower diagonal section 43 is 135 ° ± 15 °.
The inner diameter of the main air pipe and the length of the horizontal linear pipeline are designed and manufactured according to the requirements of a standard air duct test for a standard GB/T1236 industrial ventilator. The horizontal straight line part of the pipeline is provided with the porous rectifying grating, and the positions of the pressure measuring hole and the temperature measuring hole of the straight line part are designed and manufactured according to the requirements of the standard GB/T1236, so that the wind speed is more stable, and the accuracy and the reliability of measured data are better ensured.
The horizontal straight ducts of the main air ducts are inclined downwards to reduce weight and wind resistance, and the angle A degrees are preferably 135 degrees +/-15 degrees. And 4-5 sets of steel binding belts, vibration reduction belts and fasteners are adopted to fix the main air pipe and the cantilever.
Main air duct boom 5 includes boom mount 51, main boom 52, counterweight 53, diagonal tension large-leaved dogwood 54, support column 55, and securing straps 56. The rotating mechanism is connected with a cantilever mounting frame 51, the cantilever mounting frame 51 is connected with a main cantilever 52 in a welding mode, one end of the main cantilever 52 is provided with a balance block 53, and the other end of the main cantilever 52 is connected with the main air duct 4.
The main cantilever 52 is welded with a support column 55, and an inclined pull large-leaved dogwood 54 is arranged between the support column 55 and the two ends of the main cantilever 52. The main boom 52 is connected to the main air duct 4 by a fixing strap 56. The hole site of the mounting base is consistent with the mounting hole site of the lower mounting plate.
Except the balance weight, the balance weight is formed by welding channel steel, round steel, I-shaped steel and the like. The cantilever mounting bracket is formed by welding channel steel, the oblique pull large-leaved dogwood is round steel, the air pipe cantilever is I-shaped steel, the length is slightly shorter than that of the air pipe, and the left balance block is mainly used for balancing the unbalanced weight of the right main air pipe and the cantilever thereof, so that the gravity center of the main air pipe cantilever and the main air pipe is basically located at the center of the mounting plate inner hole in the rotary locking mechanism, and the stability of the generator cooling and ventilating device is ensured.
Description of the invention:
A. when the cooling ventilation of the tested motor 7 is in an upper air inlet mode, the main air pipe and the cantilever are rotated to be perpendicular to the wall surface of the factory building. An upper air inlet pipeline at the end of the motor is installed, and a horizontal air outlet is shielded by a wind shield. Then the electromagnet power supply is started to lock the main air pipe and the cantilever to rotate.
B. When the cooling ventilation of the tested motor is in a horizontal air inlet mode, the main air pipe and the cantilever rotate to be parallel to the wall surface of the factory building. Only need install the horizontal air-supply line of motor end, use the deep bead to shelter from well go up the air outlet can.
C. And starting the fan frequency converter to control and adjust the air volume to the specified requirement, and then the test task of the generator can be carried out.
The foregoing basic embodiments of the invention and their various further alternatives can be freely combined to form multiple embodiments, all of which are contemplated and claimed herein. In the scheme of the invention, each selection example can be combined with any other basic example and selection example at will.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The utility model provides a generator cooling ventilation device, includes air feed system (1) and support frame (2), its characterized in that: the air supply system (1) is respectively communicated with the main air pipe (4) and the horizontal air pipe (6), the support frame (2) is provided with a main air pipe cantilever (5), and the main air pipe (4) is arranged on the main air pipe cantilever (5).
2. The generator cooling ventilation device of claim 1, wherein: the air supply system (1) and the support frame (2) are respectively and independently installed on the plant floor in a ground riveting bolt and cement grouting mode.
3. The generator cooling ventilation device of claim 1, wherein: the air supply system (1) comprises an upper air outlet (11) and a horizontal air outlet (12), the upper air outlet (11) is communicated with the main air pipe (4) through an upper air duct (13), the horizontal air outlet (12) is communicated with the horizontal air pipe (6), and ventilation valves are arranged between the upper air outlet (11) and the upper air duct (13) and between the horizontal air outlet (12) and the horizontal air pipe (6).
4. The generator cooling ventilation device of claim 1, wherein: the supporting frame (2) comprises a supporting frame, a crawling ladder (23) is arranged on the side portion of the supporting frame, an installation panel (24) is arranged on the upper portion of the supporting frame, and the installation panel (24) supports the main air duct cantilever (5).
5. The generator cooling ventilation device of claim 1, wherein: the support frame (2) is provided with a rotating mechanism (3), and the main air duct cantilever (5) is arranged on the rotating mechanism (3).
6. The generator cooling ventilation device of claim 1, wherein: rotary mechanism (3) including last mounting panel (31), go up mounting panel (31) and be connected with main air duct cantilever (5), go up mounting panel (31) and be connected with rotating assembly (33), rotating assembly (33) are connected with lower mounting panel (32), lower mounting panel (32) are connected with support frame (2).
7. Generator cooling ventilation device according to claim 6, wherein: and a locking assembly (35) is arranged between the upper mounting plate (31) and the lower mounting plate (32).
8. The generator cooling ventilation device of claim 1, wherein: the main air pipe (4) comprises an elbow section (41), the elbow section (41) is communicated with the air supply system (1), the elbow section (41) is communicated with a horizontal section (42), and the horizontal section (42) is communicated with a lower inclined section (43).
9. Generator cooling ventilation device according to claim 8, characterized in that: the included angle between the horizontal section (42) and the downward inclined section (43) is 135 degrees +/-15 degrees.
10. The generator cooling ventilation device of claim 1, wherein: main tuber pipe cantilever (5) include cantilever mounting bracket (51), support frame (2) support cantilever mounting bracket (51), cantilever mounting bracket (51) are connected with main cantilever (52), the one end of main cantilever (52) is equipped with balancing piece (53), the other end and the main tuber pipe (4) of main cantilever (52) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830029.2A CN113746267B (en) | 2021-07-22 | 2021-07-22 | Cooling and ventilating device of generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110830029.2A CN113746267B (en) | 2021-07-22 | 2021-07-22 | Cooling and ventilating device of generator |
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| CN113746267A true CN113746267A (en) | 2021-12-03 |
| CN113746267B CN113746267B (en) | 2023-11-28 |
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